Support for Microsoft Security Essentials

Resolve issues with these top solutions

View the top support topics, general and how-to topics and more
Visit the Security Essentials web site to get answers to the top support topics for Microsoft Security Essentials.

To ensure you are protected, download the latest definitions for Microsoft Security Essentials
If you encounter problems while trying to install definition updates, follow these steps to manually download and then install the latest definition updates.

Manually uninstall Microsoft Security Essentials if you cannot unistall it by using the Add or Remove Programs item
Attempting to upgrade and unable to remove the previous version of Microsoft Security Essentials? Learn how to manually uninstall Microsoft Security Essentials or have us Fix it for you!

Browse related solution centers

To learn more about related products or topics, click on a solution center listed below.

• Virus and security solution center